have someone's number

idiom

Definition of have someone's number

informal
: to be able to deal with or defeat someone easily especially because one knows or understands that person so well She thinks she's got my number, but I'm going to prove her wrong.

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Dictionary Entries Near have someone's number

have someone's ear

have someone's number

have (someone) back

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Cite this Entry

“Have someone's number.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/have%20someone%27s%20number. Accessed 22 Sep. 2021.

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